Normally open - the contact is open when the contactor is not working;
Normally closed - the contact is closed when the contactor is not working;
When working, the normally closed contact is disconnected first, and the normally open contact is closed again; when the contactor coil is de-energized, the normally open contact is first disconnected, and the normally closed contact is closed and reset.
The normally open contact is that the open contact is open between the two contacts (ie, not conducting), and the normally closed is the opposite.
Stainless Steel Pressure Gauge For Marine
High performance silicon piezoresistive pressure core is adopted to maintain the characteristics of solid-state sensor. The intelligent microprocessor is adopted to eliminate the adjustment of movable parts, so that the digital Pressure Gauge has a longer service life. LCD digital display avoids the error caused by analog display instrument in the reading process. The zero adjustment of the display value can be completed only through the button on the panel.
The reading shows that it will automatically enter the sleep working state after a period of time, and the power consumption of the pressure gauge is very low. The excellent accuracy and convenient reading make jb500 pressure gauge an ideal upgrade substitute for traditional analog pressure gauge.
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Taizhou Jiabo Instrument Technology Co., Ltd. , https://www.taizhoujbcbyq.com